Jonathan is an Assistant Professor in the Dept of Astronomy at Univ.
CA, Santa Cruz.  He received his PhD in planetary science at the Univ.
of AZ in 2004, and in March 2004 received a NASA NPP Fellowship and 
in 2006 a Spitzer Space Telescope Fellowship.

Jonathan a planetary scientist that works to understand planets as a
class of astrophysical objects. My current research is on modeling
giant planet atmospheres, interiors, and thermal evolution. Exciting
extrasolar planet observations are happening on two fronts: the
close-in "hot Jupiter" planets that can be studied with space-based and
ground-based telescopes, and the young warm planets far from their
parent stars, which can be directly imaged.  In his work on extrasolar
giant planets he makes connections between these distant planets, which
we are just beginning to understand, and Jupiter, Saturn, Uranus, and
Neptune, for which we have abundant data and a long history of
research. These exciting fields will continue to expand, fueled by
ground-based observations, space missions, and new modeling efforts.